One of the most gruesome is tapeworm, a species of digestive tract-invading parasites that includes Diphyllobothrium nihonkaiense, or the Japanese broad tapeworm.
Based on those results, researchers warn that salmon caught anywhere along the Pacific coast of North America may be infected.
In fact, Japanese tapeworm larvae, known as plerocercoids, could be found in salmon caught off the coasts of eastern Russia and Japan.
Could Japanese tapeworms also be infecting salmon caught in the United States?
Based on the study results, four species of Pacific salmon are known to carry Japanese tapeworm infections: chum salmon, masu salmon, pink salmon and sockeye salmon.